CN207521518U - A kind of blanking die for avoiding floating - Google Patents

A kind of blanking die for avoiding floating Download PDF

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Publication number
CN207521518U
CN207521518U CN201721296454.3U CN201721296454U CN207521518U CN 207521518 U CN207521518 U CN 207521518U CN 201721296454 U CN201721296454 U CN 201721296454U CN 207521518 U CN207521518 U CN 207521518U
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China
Prior art keywords
punching
mandril
die
waste material
lower mold
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CN201721296454.3U
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Chinese (zh)
Inventor
吴应举
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Hefei Changqing Machinery Co Ltd
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Hefei Changqing Machinery Co Ltd
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Priority to CN201721296454.3U priority Critical patent/CN207521518U/en
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Abstract

The utility model discloses a kind of blanking dies for avoiding floating, including die holder, it is punched lower die, it is punched mandril, stripper and waste material squeeze out bar, the die holder upper end is fixedly connected with lower mold backing plate by screw, lower mold fixed plate and punching lower die has been bolted in lower mold base plate upper center, it is punched in lower die and is equipped with punching groove, punching mandril is equipped with above the punching groove, mandril fixed plate bottom is fixedly connected with spring backing plate by screw, spring backing plate bottom connects stripper by spring block, mandril fixed plate is fixedly connected with upper die plate by screw, de- material cushion chamber is equipped in the punching lower die, buffer spring is installed in de- material cushion chamber, the activity material returned tongue that waste material squeezes out bar front end is arranged in punching groove;It is good to be punched effect, activity material returned tongue offsets with punching mandril and strikes off floating waste material thereon, and stripper strikes off the floating waste material being punched on mandril, along punching mandril slide downward so as to solve the problems, such as scrap rising in punching production.

Description

A kind of blanking die for avoiding floating
Technical field
The utility model is related to Stamping Die Technology field, specifically a kind of blanking die for avoiding floating.
Background technology
In the punching production of blanking die, scrap rising is a problem that is affected, it not only influences to produce, even It can mold damage.In general, round or rectangular waste material for waiting regular shapes easily generates floating, and the abnormity that shape is more complicated Waste material is then less to generate floating.Some currently used solution scrap rising Producing reasons and solution include:(1) it is punched Gap is big, scrap rising often occurs if in the die trial stage, illustrates that the too big in blade clearance should remake cavity plate simultaneously Reduce blade clearance.If only generating scrap rising once in a while, roughness can be increased with spark discharge in matrix cavity; (2) convex mould surface is too smooth, and waste material is attached under atmospheric pressure effect on punch-pin, can increase stomata on punch-pin;(3) it is unilateral Punching generates scrap rising, and waste material is choked not being punched side increase wedge angle;(4) drawing velocity is higher, is considered as reducing speed, such as Because production need can not reduction of speed, can increase mandril on punch-pin, push up lower waste material.In addition, there are some human factors, such as sword Tang Using excessive punching oil etc. when afterwards without fully demagnetization, god's pressure production, these should all be avoided as possible.Above method scrap rising Problem is of high cost, assembling is inconvenient, and the processing for being unfavorable for blanking die uses.Therefore, it is necessary to scrap risings to meet workpiece Punching press use.
Utility model content
The purpose of this utility model is to provide a kind of blanking die for avoiding floating, to solve to carry in above-mentioned background technology The problem of going out.
To achieve the above object, the utility model provides following technical solution:
It is a kind of avoid float blanking die, including die holder, punching lower die, punching groove, punching mandril, stripper and Waste material squeezes out bar, and the die holder upper end is fixedly connected with lower mold backing plate by screw, and lower mold backing plate upper end is connected by supporting leg Lower mold base plate, lower mold base plate are equipped with waste material material-dropping hole, and the lower mold base plate upper center has been bolted lower die and has fixed Plate and punching lower die, punching lower die is interior to be equipped with punching groove, and punching bottom portion of groove is connected with waste material material-dropping hole, the punching groove Top is equipped with punching mandril, and punching mandril is fixedly connected with mandril fixed plate, and mandril fixed plate bottom is fixedly connected with bullet by screw Spring backing plate, spring backing plate bottom connect stripper by spring block, and mandril fixed plate is fixedly connected with upper die plate by screw, institute It states and de- material cushion chamber is equipped in punching lower die, buffer spring is installed in de- material cushion chamber, the activity that waste material squeezes out bar front end is moved back Material tongue is arranged in punching groove.
As further program of the utility model:Waste material is equipped with below the waste material material-dropping hole and accepts box, waste material is accepted Box is placed in the chamber between lower mold backing plate and lower mold base plate.
As further program of the utility model:The stripper is set on punching mandril and movable along punching mandril Setting.
As further program of the utility model:The upper die plate upper end is equipped with T-shaped assembling foot, and assembling foot is fastened on In fitting groove in upper mold seat, ejector pin bar is equipped in the middle part of the upper mold seat, ejector pin bar is fixedly connected with mandril fixed plate.
As further program of the utility model:The upper die plate bottom and lower mold base plate top are mounted on being punched Block is punched the symmetrical installation of block.
As further program of the utility model:The buffer spring front end is set on waste material extrusion bar and and waste material The limit baffle ring squeezed out on bar offsets.
As further program of the utility model:Scarf, the inclination of scarf are equipped on the upside of the activity material returned tongue Angle is 30-60 °, and the punch bottom side of the punching mandril is inclined surface.
Compared with prior art, the beneficial effects of the utility model are:A kind of blanking die for avoiding floating, punching It is good to cut out effect, when punching mandril above carries, buffer spring releases activity material returned tongue, and activity material returned tongue offsets simultaneously with punching mandril Floating waste material thereon is struck off, then further, after punching mandril is exited from punching groove, stripper edge punching mandril Slide downward is further struck off the floating waste material being punched on mandril, so as to solve the problems, such as scrap rising in punching production.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
Fig. 2 is the structure diagram that waste material squeezes out bar in the utility model.
In figure:1- die holders, 2- lower mold backing plates, 3- waste materials accept box, 4- waste materials material-dropping hole, 5- lower mold base plates, 6- lower dies Fixed plate, 7- punchings lower die, 8- supporting legs, 9- punchings groove, 10- spring blocks, 11- is punched mandril, 12- is punched block, on 13- Die holder, 14- fitting grooves, 15- upper die plates, 16- ejector pins bar, 17- mandrils fixed plate, 18- springs backing plate, 19- strippers, 20- De- material cushion chamber, 21- buffer springs, 22- waste materials squeeze out bar, 23- limit baffle rings, 24- activity materials returned tongue, 25- scarves.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work All other embodiments obtained shall fall within the protection scope of the present invention.
Please refer to Fig.1~2, in the utility model embodiment, a kind of blanking die for avoiding floating, including die holder 1, punching It cuts out lower die 7, punching groove 9, punching mandril 11, stripper 19 and waste material and squeezes out bar 22,1 upper end of die holder is consolidated by screw Surely lower mold backing plate 2 is connected, 2 upper end of lower mold backing plate connects lower mold base plate 5 by supporting leg 8, and lower mold base plate 5 is equipped with waste material blanking Hole 4,4 lower section of waste material material-dropping hole are equipped with waste material and accept box 3, and waste material is accepted box 3 and is placed between lower mold backing plate 2 and lower mold base plate 5 Chamber in, 5 upper center of lower mold base plate be bolted lower mold fixed plate 6 and punching lower die 7, be punched lower die 7 Interior to be equipped with punching groove 9,9 bottom of punching groove is connected with waste material material-dropping hole 4.
9 top of punching groove is equipped with punching mandril 11, and punching mandril 11 is fixedly connected with mandril fixed plate 17, and mandril is solid 17 bottom of fixed board is fixedly connected with spring backing plate 18 by screw, and 18 bottom of spring backing plate connects stripper 19 by spring block 10, Stripper 19 is set on punching mandril 11 and is set along 11 activity of punching mandril, and the mandril fixed plate 17 is fixed by screw Upper die plate 15 is connected, 15 upper end of upper die plate is equipped with T-shaped assembling foot, and assembling foot is fastened on the fitting groove 14 in upper mold seat 13 In, 13 middle part of upper mold seat is equipped with ejector pin bar 16, and ejector pin bar 16 is fixedly connected with mandril fixed plate 17.
15 bottom of upper die plate and 5 top of lower mold base plate are mounted on punching block 12, and punching block 12 is symmetrical Installation.
De- material cushion chamber 20 is equipped in the punching lower die 7, buffer spring 21, buffering elastic are installed in de- material cushion chamber 20 21 front end of spring is set in waste material and squeezes out on bar 22 and offset with the limit baffle ring 23 on waste material extrusion bar 22, before waste material squeezes out bar 22 The activity material returned tongue 24 at end is arranged in punching groove 9, and 24 upside of activity material returned tongue is equipped with scarf 25, the inclination of scarf 25 Angle is 30-60 °, and the punch bottom side of the punching mandril 11 is inclined surface.
When press driving upper mold seat 13 pushes, punching mandril 11 is punched punching 7 upper plate of lower die and enters punching groove 9 Interior, the waste material of punching is fallen into the waste material material-dropping hole 4 of 9 lower section of punching groove, and punching squeezes out bar to punching mandril 11 with waste material downwards When the scarf 25 of 22 activity material returned tongue 24 is inconsistent, the entrance of lateral separation Compressive activities material returned tongue 24 of generation is recessed with being punched 9 inner wall flush position of slot, when punching mandril 11 above carries, buffer spring 21 releases activity material returned tongue 24, activity material returned tongue 24 It offsets with punching mandril 11 and strikes off floating waste material thereon, then further, when punching mandril 11 is moved back from punching groove 9 After going out, stripper 19 further strikes off the floating waste material being punched on mandril 11, along punching 11 slide downward of mandril so as to solve In punching production the problem of scrap rising.
The utility model is not limited to above-described embodiment, on the basis of technical solution disclosed in the utility model, this For the technical staff in field according to disclosed technology contents, not needing to performing creative labour can be to some of which technology spy Sign makes some simple modification, equivalent change and modifications, belongs in the range of technical solutions of the utility model.
In the description of this specification, it should be noted that unless otherwise clearly defined and limited, term " setting ", " connected " and " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally connect It connects;It can be directly connected, can also be indirectly connected by intermediary, can be the connection inside two elements.For this For the those of ordinary skill in field, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.

Claims (7)

1. a kind of blanking die for avoiding floating, including die holder (1), punching lower die (7), punching groove (9), punching mandril (11), stripper (19) and waste material squeeze out bar (22), which is characterized in that die holder (1) upper end is fixedly connected by screw Lower mold backing plate (2), lower mold backing plate (2) upper end connect lower mold base plate (5) by supporting leg (8), and lower mold base plate (5) is equipped with waste material Lower mold fixed plate (6) and punching lower die (7), punching has been bolted in material-dropping hole (4), lower mold base plate (5) upper center It cuts out and punching groove (9) is equipped in lower die (7), punching groove (9) bottom is connected with waste material material-dropping hole (4), the punching groove (9) Top is equipped with punching mandril (11), and punching mandril (11) is fixedly connected with mandril fixed plate (17), and mandril fixed plate (17) bottom leads to It crosses screw and is fixedly connected with spring backing plate (18), spring backing plate (18) bottom connects stripper (19), mandril by spring block (10) Fixed plate (17) is fixedly connected with upper die plate (15) by screw, is equipped with de- material cushion chamber (20) in the punching lower die (7), takes off Buffer spring (21) is installed, the activity material returned tongue (24) that waste material squeezes out bar (22) front end is arranged on punching in material cushion chamber (20) In groove (9).
A kind of 2. blanking die for avoiding floating according to claim 1, which is characterized in that the waste material material-dropping hole (4) Lower section is equipped with waste material and accepts box (3), and waste material accepts the chamber that box (3) is placed between lower mold backing plate (2) and lower mold base plate (5) It is interior.
3. a kind of blanking die for avoiding floating according to claim 1, which is characterized in that the stripper (19) is arranged It is set on punching mandril (11) and along punching mandril (11) activity.
4. a kind of blanking die for avoiding floating according to claim 1, which is characterized in that on the upper die plate (15) End is equipped with T-shaped assembling foot, and assembling foot is fastened in the fitting groove (14) in upper mold seat (13), is equipped in the middle part of the upper mold seat (13) Ejector pin bar (16), ejector pin bar (16) are fixedly connected with mandril fixed plate (17).
A kind of 5. blanking die for avoiding floating according to claim 1, which is characterized in that upper die plate (15) bottom Portion and lower mold base plate (5) top are mounted on punching block (12), are punched block (12) symmetrical installation.
6. a kind of blanking die for avoiding floating according to claim 1, which is characterized in that before the buffer spring (21) End cap is located at waste material and squeezes out on bar (22) and offset with the limit baffle ring (23) on waste material extrusion bar (22).
A kind of 7. blanking die for avoiding floating according to claim 1, which is characterized in that the activity material returned tongue (24) Upside is equipped with scarf (25), and the angle of inclination of scarf (25) is (30)-(60) °, the punch bottom of the punching mandril (11) Side is inclined surface.
CN201721296454.3U 2017-10-10 2017-10-10 A kind of blanking die for avoiding floating Active CN207521518U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721296454.3U CN207521518U (en) 2017-10-10 2017-10-10 A kind of blanking die for avoiding floating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721296454.3U CN207521518U (en) 2017-10-10 2017-10-10 A kind of blanking die for avoiding floating

Publications (1)

Publication Number Publication Date
CN207521518U true CN207521518U (en) 2018-06-22

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111715788A (en) * 2019-03-22 2020-09-29 中铝材料应用研究院有限公司 Device for preparing forming limit test sample
CN112108558A (en) * 2020-08-24 2020-12-22 浙江泰欣电器有限公司 Stamping die
CN112170603A (en) * 2020-09-22 2021-01-05 安徽地豪科技环保材料有限公司 Universal die for aluminum plate stamping

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111715788A (en) * 2019-03-22 2020-09-29 中铝材料应用研究院有限公司 Device for preparing forming limit test sample
CN112108558A (en) * 2020-08-24 2020-12-22 浙江泰欣电器有限公司 Stamping die
CN112170603A (en) * 2020-09-22 2021-01-05 安徽地豪科技环保材料有限公司 Universal die for aluminum plate stamping

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